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<head><meta charset="utf-8"><title>don&#x27;t need to build · t-compiler/wg-rustc-dev-guide · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/index.html">t-compiler/wg-rustc-dev-guide</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html">don&#x27;t need to build</a></h3>

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<a name="203549139"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203549139" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mark-i-m <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203549139">(Jul 10 2020 at 19:32)</a>:</h4>
<p>Hey, we should probably add a couple of things to the getting started guide:</p>
<ol>
<li>You don't need to build to get started.</li>
<li>If you have a not-beefy computer, you may want to do <code>check</code> builds and let the CI do a full test...</li>
</ol>



<a name="203564170"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203564170" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203564170">(Jul 10 2020 at 22:22)</a>:</h4>
<ol start="3">
<li>If you're only changing the standard library, you can use <code>--stage 0 src/libstd</code> and never have to build rustc</li>
</ol>



<a name="203607882"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203607882" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mark-i-m <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203607882">(Jul 11 2020 at 18:28)</a>:</h4>
<p><span class="user-mention" data-user-id="232545">@Joshua Nelson</span> Would you be up for a PR?</p>



<a name="203607900"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203607900" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203607900">(Jul 11 2020 at 18:29)</a>:</h4>
<p>Oh whew this is the rustc-dev-guide channel</p>



<a name="203607916"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203607916" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203607916">(Jul 11 2020 at 18:30)</a>:</h4>
<p>I was worried this was T-infra <span aria-label="laughing" class="emoji emoji-1f606" role="img" title="laughing">:laughing:</span></p>



<a name="203607947"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203607947" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203607947">(Jul 11 2020 at 18:30)</a>:</h4>
<p>Sure, I'll try and add it this afternoon</p>



<a name="203607983"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203607983" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203607983">(Jul 11 2020 at 18:31)</a>:</h4>
<p>although it will be outdated when/if <a href="https://github.com/rust-lang/compiler-team/issues/326">https://github.com/rust-lang/compiler-team/issues/326</a> lands</p>



<a name="203608035"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203608035" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mark-i-m <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203608035">(Jul 11 2020 at 18:32)</a>:</h4>
<p>Hmm... that is true</p>



<a name="203608049"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203608049" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mark-i-m <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203608049">(Jul 11 2020 at 18:32)</a>:</h4>
<p>Well... it would be partly outdated. (1) and (2) would probably still be true</p>



<a name="203608057"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203608057" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203608057">(Jul 11 2020 at 18:33)</a>:</h4>
<p>But I expect to have to change a _lot_ of docs when that changes so no need to avoid docs in the meantime</p>



<a name="203608071"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203608071" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mark-i-m <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203608071">(Jul 11 2020 at 18:33)</a>:</h4>
<p><span class="user-mention" data-user-id="232545">@Joshua Nelson</span> Feel free to make the PR really minimal if you expect to change it again later</p>



<a name="203610859"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don%27t%20need%20to%20build/near/203610859" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/don&#x27;t.20need.20to.20build.html#203610859">(Jul 11 2020 at 19:53)</a>:</h4>
<p><span class="user-mention" data-user-id="198054">@mark-i-m</span> <a href="https://github.com/rust-lang/rustc-dev-guide/pull/792">https://github.com/rust-lang/rustc-dev-guide/pull/792</a></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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